:root{--paper:#eef2e6;--card:#f8faf3;--ink:#131a10;--mut:#465140;--line:rgba(19,26,16,.24);--hair:rgba(19,26,16,.13);--g:#2a6410;--fill:#86e05a;--night:#070b18;--night2:#111a31;--star:#e8eefc;--smut:#a9b4cf;--lum:#9bea74;--bd:rgba(232,238,252,.26);--ser:"STIX Two Text",Georgia,"Times New Roman",serif;--sans:"Source Sans 3",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"PT Mono",ui-monospace,Menlo,Consolas,monospace}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:400 17px/1.62 var(--sans);background-color:var(--paper);
background-image:radial-gradient(circle at 23px 41px,rgba(19,26,16,.5) 0 1px,transparent 1.7px),radial-gradient(circle at 187px 96px,rgba(19,26,16,.36) 0 .8px,transparent 1.4px),radial-gradient(circle at 301px 233px,rgba(19,26,16,.5) 0 1.3px,transparent 2px),radial-gradient(circle at 92px 284px,rgba(19,26,16,.3) 0 .8px,transparent 1.4px),radial-gradient(circle at 410px 60px,rgba(19,26,16,.42) 0 1px,transparent 1.7px),radial-gradient(circle at 250px 390px,rgba(19,26,16,.3) 0 .7px,transparent 1.3px);
background-size:347px 331px,347px 331px,347px 331px,523px 467px,523px 467px,523px 467px;overflow-wrap:break-word}
[hidden]{display:none!important}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--g);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--g);outline-offset:3px;border-radius:2px}
.night :focus-visible{outline-color:var(--lum)}
::selection{background:var(--fill);color:var(--ink)}
code{font-family:var(--mono);font-size:.9em}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 clamp(18px,4vw,44px)}
.skip{position:absolute;left:12px;top:-80px;z-index:50;background:var(--ink);color:var(--paper);padding:.7rem 1rem}
.skip:focus{top:12px;color:var(--paper)}

/* reticle */
.ret{width:1.25em;height:1.25em;flex:none;color:currentColor}
.ret .core{fill:var(--fill);stroke:currentColor;stroke-width:1}
.gs{fill:var(--fill);stroke:var(--ink);stroke-width:1.2}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:48px;padding:.6rem 1.25rem;background:var(--fill);color:var(--ink);border:1.5px solid var(--ink);border-radius:3px;font:600 1.02rem/1.2 var(--sans);text-decoration:none;cursor:pointer;box-shadow:0 0 0 0 var(--ink);transition:box-shadow .15s,transform .15s}
.btn:hover{color:var(--ink);box-shadow:3px 3px 0 0 var(--ink);transform:translate(-1px,-1px)}
.btn:active{transform:none;box-shadow:none}
.btn.ghost{background:transparent}
.btn.sm{min-height:44px;padding:.45rem .9rem;font-size:.93rem}
.night .btn{border-color:var(--fill)}
.night .btn:hover{box-shadow:3px 3px 0 0 var(--star)}
.night .btn.ghost{color:var(--star);border-color:var(--bd)}
.night .btn .core{stroke:var(--ink)}

/* header */
.top{position:sticky;top:0;z-index:30;background:rgba(238,242,230,.93);backdrop-filter:blur(8px);border-bottom:1px solid var(--ink);box-shadow:0 3px 0 -2px var(--ink),0 4px 0 0 var(--paper),0 5px 0 0 var(--hair)}
.bar{display:flex;align-items:center;gap:1.2rem;min-height:66px}
.logo{display:inline-flex;align-items:center;gap:.55rem;min-height:44px;color:var(--ink);text-decoration:none;font:italic 400 1.28rem/1 var(--ser);letter-spacing:.005em}
.logo .ret{width:26px;height:26px}
.nav{display:flex;align-items:center;margin-left:auto}
.nav a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 1rem 0 1.5rem;color:var(--ink);text-decoration:none;font:400 .84rem var(--mono);letter-spacing:.02em}
.nav a::before{content:"";position:absolute;left:.35rem;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:var(--ink)}
.nav a:nth-child(2)::before{transform:scale(.8)}.nav a:nth-child(3)::before{transform:scale(.6)}.nav a:nth-child(4)::before{transform:scale(.45)}
.nav a:hover{color:var(--g)}
.nav a[aria-current]{font-weight:400;text-decoration:underline;text-decoration-color:var(--g);text-decoration-thickness:2px;text-underline-offset:.45em}
.nav a[aria-current]::before{transform:none;width:13px;height:13px;margin-top:-6.5px;left:.1rem;background:radial-gradient(circle,var(--fill) 0 2.5px,var(--ink) 2.6px 3.4px,transparent 3.5px);border:1.5px dashed var(--ink)}
.btn.key{min-height:44px;padding:.4rem 1rem;font-size:.96rem}
.burger{display:none;width:46px;height:46px;border:1.5px solid var(--ink);border-radius:3px;background:transparent;cursor:pointer;padding:0;align-items:center;justify-content:center}
.burger i,.burger i::before,.burger i::after{display:block;width:20px;height:1.5px;background:var(--ink);content:"";position:relative}
.burger i::before{position:absolute;top:-6px}.burger i::after{position:absolute;top:6px}

/* hero */
.hero{padding:clamp(28px,5vw,64px) 0 clamp(36px,5vw,70px);border-bottom:1px solid var(--hair)}
.hg{display:grid;grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);gap:clamp(28px,4vw,64px);align-items:end}
.hg>*{min-width:0}
.eyebrow{display:flex;align-items:center;gap:.6rem;font:400 .82rem var(--mono);letter-spacing:.04em;color:var(--mut);margin-bottom:1.3rem}
.eyebrow .ret{color:var(--ink);width:20px;height:20px}
h1{font:600 clamp(2.15rem,4.3vw,3.55rem)/1.06 var(--ser);letter-spacing:-.018em;text-wrap:balance}
.lead{margin-top:1.25rem;font-size:clamp(1.08rem,1.5vw,1.24rem);line-height:1.55;color:var(--mut);max-width:60ch}
.bl{margin-top:1.5rem;border-top:1px solid var(--line)}
.bl li{position:relative;padding:.62rem 0 .62rem 1.9rem;border-bottom:1px solid var(--hair)}
.bl li::before{content:"";position:absolute;left:.25rem;top:1.15rem;width:10px;height:10px;border-radius:50%;background:var(--ink)}
.bl li:nth-child(2)::before{transform:scale(.72)}.bl li:nth-child(3)::before{transform:scale(.5)}
.acts0{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.7rem}
.hc{display:flex;flex-direction:column}
.art{display:block;width:100%;height:auto;color:var(--ink);margin-bottom:-1px}
.art text{font:13px var(--mono);fill:var(--ink)}
.art .sm{font-size:11.5px;fill:var(--mut)}
.art .ring{transform-origin:270px 106px;animation:spin 40s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* night plates (positive prints) */
.night{--ink2:var(--star);color:var(--star);background-color:var(--night);
background-image:radial-gradient(circle at 31px 27px,rgba(232,238,252,.75) 0 .9px,transparent 1.6px),radial-gradient(circle at 201px 143px,rgba(232,238,252,.5) 0 .8px,transparent 1.4px),radial-gradient(circle at 120px 210px,rgba(155,234,116,.75) 0 1px,transparent 1.8px),radial-gradient(circle at 330px 70px,rgba(232,238,252,.4) 0 .7px,transparent 1.3px);
background-size:263px 241px,263px 241px,419px 367px,419px 367px}
.plate{border:1px solid var(--ink);border-radius:4px;position:relative;min-width:0}
.plate::before,.plate::after,.kf::before,.kf::after{content:"+";position:absolute;font:14px/1 var(--mono);color:var(--ink);opacity:.75}
.plate::before{left:-18px;bottom:-4px}.plate::after{right:-18px;bottom:-4px}
.plh{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.3rem 1rem;padding:.95rem 1.15rem .85rem;border-bottom:1px solid var(--bd)}
.plh h2{font:italic 400 1.22rem/1.2 var(--ser);color:var(--star)}
.plh code{font-size:.78rem;color:var(--lum);overflow-wrap:anywhere}
.codetabs{display:flex;gap:0;padding:0 .5rem;border-bottom:1px solid var(--bd)}
.codetabs button{position:relative;min-height:46px;padding:0 1rem;background:none;border:0;color:var(--smut);font:400 .84rem var(--mono);cursor:pointer}
.codetabs button:hover{color:var(--star)}
.codetabs button[aria-selected=true]{color:var(--lum)}
.codetabs button[aria-selected=true]::after{content:"";position:absolute;left:1rem;right:1rem;bottom:-1px;height:2px;background:var(--lum)}
pre.code{position:relative;margin:0;background:var(--night);border-radius:0 0 3px 3px;padding:3.1rem 1.15rem 1.15rem;overflow-x:auto;max-width:100%;color:var(--star);font:400 .84rem/1.7 var(--mono);tab-size:2;-webkit-overflow-scrolling:touch}
pre.code code{font-size:inherit;white-space:pre}
pre.code .k{color:var(--lum)}pre.code .s{color:#f4d98a}pre.code .c{color:#8f9bbb;font-style:italic}
.copy{position:absolute;top:.5rem;right:.55rem;min-height:44px;min-width:64px;padding:0 .8rem;background:rgba(7,11,24,.8);color:var(--star);border:1px solid var(--bd);border-radius:3px;font:400 .76rem var(--mono);cursor:pointer}
.copy:hover{border-color:var(--lum);color:var(--lum)}
.prose pre.code{border:1px solid var(--ink);border-radius:4px;margin:1.4rem 0}

/* two-column grid with sticky rail */
.grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:clamp(34px,5.5vw,84px);padding-top:clamp(34px,5vw,64px);padding-bottom:clamp(40px,6vw,80px);align-items:start}
.col{min-width:0}
.rail{position:sticky;top:92px;min-width:0}
.rbox{background:var(--card);border:1px solid var(--ink);border-radius:4px;box-shadow:5px 5px 0 -1px var(--paper),5px 5px 0 0 var(--ink);max-height:calc(100vh - 116px);overflow:auto}
.rl{display:flex;align-items:center;gap:.55rem;padding:.7rem 1.1rem;border-bottom:1px solid var(--ink);font:400 .78rem var(--mono);letter-spacing:.03em}
.rl .ret{width:18px;height:18px}
.fx{padding:.3rem 1.1rem .2rem}
.fx div{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding:.6rem 0;border-bottom:1px dotted var(--line)}
.fx dt{font-size:.84rem;color:var(--mut);line-height:1.3}
.fx dd{font:600 1.36rem/1 var(--ser);white-space:nowrap}
.ep{display:grid;gap:.25rem;padding:.8rem 1.1rem;border-bottom:1px solid var(--line)}
.ep code{font-size:.76rem;overflow-wrap:anywhere;color:var(--ink)}
.ep code:first-child{color:var(--g)}
.rc{padding:1.05rem 1.1rem 1.2rem}
.rt{font:italic 400 1.26rem/1.25 var(--ser)}
.rp{font-size:.93rem;color:var(--mut);margin:.4rem 0 .95rem}
.rc .btn{width:100%}
.more{display:flex;align-items:center;justify-content:center;min-height:44px;margin-top:.35rem;font-size:.93rem}
.rh{font:400 .76rem var(--mono);letter-spacing:.05em;color:var(--mut);margin-bottom:.6rem}
.toc{padding:1rem 1.1rem .6rem;border-bottom:1px solid var(--line)}
.toc ol{counter-reset:t}
.toc li{counter-increment:t;border-top:1px dotted var(--line)}
.toc a{display:grid;grid-template-columns:1.9rem 1fr;align-items:baseline;padding:.58rem 0;min-height:44px;color:var(--ink);text-decoration:none;font-size:.93rem;line-height:1.35}
.toc a::before{content:counter(t,decimal-leading-zero);font:.72rem var(--mono);color:var(--mut)}
.toc a:hover{color:var(--g);text-decoration:underline}
.rcalc{padding:1rem 1.1rem 1.1rem;border-bottom:1px solid var(--ink);background-color:var(--night);color:var(--star);background-image:radial-gradient(circle at 31px 27px,rgba(232,238,252,.7) 0 .9px,transparent 1.6px),radial-gradient(circle at 201px 143px,rgba(155,234,116,.6) 0 .9px,transparent 1.6px);background-size:263px 241px,263px 241px}
.rcalc .rh{color:var(--lum)}
.calc{display:grid;gap:.85rem}
.calc label{display:block;font-size:.86rem;color:var(--smut);margin-bottom:.3rem}
.calc input{width:100%;min-height:48px;padding:0 .8rem;background:var(--night2);border:1px solid var(--bd);border-radius:3px;color:var(--star);font:400 1.02rem var(--mono)}
.calc input:focus{outline:2px solid var(--lum);outline-offset:2px}
.calc output{display:block;font:600 2.5rem/1.05 var(--ser);color:var(--lum);padding-top:.15rem;overflow-wrap:anywhere}
.calc div:last-child{border-top:1px solid var(--bd);padding-top:.8rem}
.rn{font-size:.84rem;color:var(--smut);margin-top:.8rem;line-height:1.45}

/* section heads + magnitude scale */
.sec{margin-bottom:clamp(44px,6vw,76px)}
.sh{display:flex;align-items:baseline;gap:.9rem;padding-bottom:.85rem;margin-bottom:1.5rem;border-bottom:1px solid var(--ink)}
.no{font:400 .8rem var(--mono);color:var(--mut);flex:none}
h2{font:600 clamp(1.55rem,2.6vw,2.05rem)/1.15 var(--ser);letter-spacing:-.012em;text-wrap:balance}
.sh h2{flex:1;min-width:0}
.mag{flex:none;align-self:center;width:78px;height:12px;background:radial-gradient(circle at 6px 6px,var(--ink) 0 5.4px,transparent 6px),radial-gradient(circle at 24px 6px,var(--ink) 0 4.2px,transparent 4.8px),radial-gradient(circle at 40px 6px,var(--ink) 0 3.1px,transparent 3.7px),radial-gradient(circle at 54px 6px,var(--ink) 0 2.2px,transparent 2.8px),radial-gradient(circle at 65px 6px,var(--ink) 0 1.5px,transparent 2.1px),radial-gradient(circle at 74px 6px,var(--ink) 0 .9px,transparent 1.5px)}
h3{font:600 1.16rem/1.3 var(--ser)}
.st{display:block;flex:none;width:14px;height:14px;border-radius:50%;background:var(--ink)}
.fts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 clamp(24px,3.5vw,48px)}
.ft{position:relative;padding:1.05rem 0 1.25rem 2rem;border-bottom:1px solid var(--hair);min-width:0}
.ft .st{position:absolute;left:0;top:1.3rem}
.ft:nth-child(1) .st{box-shadow:0 0 0 3px var(--paper),0 0 0 4px var(--ink);background:var(--fill);border:1.2px solid var(--ink)}
.ft:nth-child(2) .st{transform:scale(.86)}.ft:nth-child(3) .st{transform:scale(.72)}.ft:nth-child(4) .st{transform:scale(.58)}.ft:nth-child(5) .st{transform:scale(.46)}.ft:nth-child(6) .st{transform:scale(.36)}
.ft p,.uc p,.steps p,.ex p,.kb p{color:var(--mut);margin-top:.35rem;font-size:.98rem}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.5vw,34px);counter-reset:s}
.steps li{counter-increment:s;position:relative;padding-top:3.5rem;min-width:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;font:italic 400 3rem/1 var(--ser);color:var(--g)}
.steps li::after{content:"";position:absolute;left:2.4rem;right:-.6rem;top:1.55rem;height:0;border-top:1px dashed var(--line)}
.steps li:last-child::after{right:auto;width:11px;height:11px;border:0;border-radius:50%;background:var(--fill);box-shadow:0 0 0 1.2px var(--ink),0 0 0 4px var(--paper),0 0 0 5px var(--ink);top:1.2rem;left:2.8rem}
.ucs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.uc{position:relative;background:var(--card);border:1px solid var(--line);border-radius:4px;padding:1.2rem 1.25rem 1.3rem;min-width:0}
.uc::after{content:"+";position:absolute;right:.6rem;top:.4rem;font:13px/1 var(--mono);color:var(--mut)}
.uc:nth-child(4n+2),.uc:nth-child(4n+3){background:transparent;border-style:dashed}
.exs{border-top:0}
.ex{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:.4rem 1.6rem;padding:1.05rem 0;border-bottom:1px solid var(--hair)}
.ex p{margin-top:0}

/* prose */
.prose{max-width:46rem;margin-bottom:clamp(44px,6vw,76px)}
.prose>*+*{margin-top:1.05rem}
.prose h2{position:relative;margin-top:2.7rem;padding-top:1.5rem;border-top:1px solid var(--ink);scroll-margin-top:96px}
.prose h2::before{content:"";position:absolute;left:0;top:-5px;width:9px;height:9px;border-radius:50%;background:var(--ink);box-shadow:16px 2px 0 -1.5px var(--ink),29px 3px 0 -2.6px var(--ink)}
.prose h2:first-child{margin-top:0}
.prose h3{margin-top:1.8rem;font-size:1.24rem}
.prose ul,.prose ol{padding-left:1.4rem}
.prose ul{list-style:none;padding-left:0}
.prose ul li{position:relative;padding-left:1.5rem}
.prose ul li::before{content:"";position:absolute;left:.2rem;top:.68em;width:7px;height:7px;border-radius:50%;background:var(--ink)}
.prose ol{list-style:decimal}
.prose ol li::marker{font-family:var(--mono);font-size:.85em;color:var(--g)}
.prose li+li{margin-top:.4rem}
.prose :not(pre)>code{background:rgba(19,26,16,.08);padding:.08em .34em;border-radius:3px;overflow-wrap:anywhere}
.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;font-size:.95rem;margin:1.4rem 0;-webkit-overflow-scrolling:touch}
.prose th,.prose td{text-align:left;padding:.62rem .9rem;border-bottom:1px solid var(--hair);vertical-align:top}
.prose th{font:400 .78rem var(--mono);letter-spacing:.03em;color:var(--mut);border-bottom:1px solid var(--ink);white-space:nowrap}
.prose td:first-child{font-weight:600}
.prose blockquote{margin-left:0;margin-right:0;padding-left:1.1rem;border-left:2px solid var(--g);font:italic 1.15rem/1.5 var(--ser)}
.prose strong{font-weight:600}
.read{font:400 1.14rem/1.72 var(--ser);max-width:41rem}
.read h2{font-size:clamp(1.6rem,2.6vw,2rem)}
.read pre.code,.read table,.read code{font-family:var(--mono)}
.read table{font-family:var(--sans)}

/* faq */
.faq{border-top:0}
.q{border-bottom:1px solid var(--hair)}
.q summary{display:flex;align-items:center;gap:1rem;min-height:56px;padding:.75rem 0;cursor:pointer;list-style:none;font:600 1.1rem/1.35 var(--ser)}
.q summary::-webkit-details-marker{display:none}
.q summary span{flex:1;min-width:0}
.q summary i{position:relative;flex:none;width:22px;height:22px;border:1.5px dashed var(--ink);border-radius:50%;transition:transform .2s}
.q summary i::before,.q summary i::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink)}
.q summary i::before{width:10px;height:1.5px;margin:-.75px 0 0 -5px}
.q summary i::after{width:1.5px;height:10px;margin:-5px 0 0 -.75px;transition:opacity .2s}
.q[open] summary i{transform:rotate(90deg);background:var(--fill);border-style:solid}
.q[open] summary i::after{opacity:0}
.q summary:hover{color:var(--g)}
.q p{padding:0 2.4rem 1.2rem 0;color:var(--mut);max-width:70ch}

/* page head */
.ph{border-bottom:1px solid var(--hair);overflow:hidden}
.phi{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:2rem;align-items:end;padding-top:clamp(26px,4vw,52px);padding-bottom:clamp(26px,4vw,48px)}
.pht{min-width:0}
.orb{display:block;width:300px;height:auto;color:var(--ink);margin-bottom:calc(-1*clamp(26px,4vw,48px))}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font:400 .8rem var(--mono);letter-spacing:.02em;color:var(--mut);margin-bottom:1.1rem}
.crumb a{display:inline-flex;align-items:center;min-height:44px;color:var(--g)}
.crumb i{font-style:normal;opacity:.6}
.crumb b{font-weight:400;color:var(--ink);overflow-wrap:anywhere;min-width:0}
.date{margin-top:1.1rem;font:400 .8rem var(--mono);color:var(--mut)}
.facts{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--ink);border-radius:4px;background:var(--card);margin-top:clamp(24px,3.5vw,40px)}
.facts div{padding:1.05rem 1.1rem 1rem;border-left:1px dotted var(--line);min-width:0;display:flex;flex-direction:column}
.facts div:first-child{border-left:0;background:var(--fill);border-radius:3px 0 0 3px}
.facts dd{font:600 clamp(1.6rem,2.6vw,2.2rem)/1 var(--ser)}
.facts dt{font-size:.86rem;color:var(--mut);margin-top:.45rem;line-height:1.3}
.facts div:first-child dt{color:var(--ink)}
.tk{background:var(--card);border:1px solid var(--ink);border-radius:4px;padding:1.3rem 1.4rem 1.2rem;margin-bottom:clamp(46px,5vw,60px);max-width:41rem;box-shadow:5px 5px 0 -1px var(--paper),5px 5px 0 0 var(--ink)}
.tk h2{font:italic 400 1.4rem/1.2 var(--ser);margin-bottom:.6rem}
.tk li{display:flex;gap:.85rem;align-items:baseline;padding:.55rem 0;border-top:1px dotted var(--line)}
.tk .st{width:10px;height:10px;position:relative;top:-1px}
.tk li:nth-child(2) .st{transform:scale(.8)}.tk li:nth-child(3) .st{transform:scale(.62)}.tk li:nth-child(4) .st{transform:scale(.46)}
.tk span{flex:1;min-width:0}

/* key page */
.kh{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,480px);grid-template-areas:"kt kf" "kb kf";gap:clamp(20px,3vw,34px) clamp(34px,5.5vw,84px);align-items:start;padding-top:clamp(22px,3.6vw,48px);padding-bottom:clamp(30px,4vw,56px);border-bottom:1px solid var(--hair)}
.kt{grid-area:kt;min-width:0}
.kb{grid-area:kb;min-width:0;border-top:1px solid var(--ink)}
.kb li{display:flex;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--hair)}
.kb .st{margin-top:.38rem;width:12px;height:12px}
.kb li:nth-child(2) .st{transform:scale(.8)}.kb li:nth-child(3) .st{transform:scale(.62)}.kb li:nth-child(4) .st{transform:scale(.46)}
.kb div{min-width:0}
.kf{grid-area:kf;position:relative;min-width:0;background-color:var(--night);color:var(--star);border:1px solid var(--ink);border-radius:4px;box-shadow:7px 7px 0 -1px var(--paper),7px 7px 0 0 var(--ink);
background-image:radial-gradient(circle at 31px 27px,rgba(232,238,252,.75) 0 .9px,transparent 1.6px),radial-gradient(circle at 201px 143px,rgba(232,238,252,.5) 0 .8px,transparent 1.4px),radial-gradient(circle at 120px 210px,rgba(155,234,116,.75) 0 1px,transparent 1.8px),radial-gradient(circle at 330px 70px,rgba(232,238,252,.4) 0 .7px,transparent 1.3px);background-size:263px 241px,263px 241px,419px 367px,419px 367px}
.kf::before{left:-18px;top:-4px}.kf::after{left:-18px;bottom:-4px}
.pl{display:flex;flex-wrap:wrap;align-items:center;gap:.3rem .7rem;padding:.75rem 1.3rem;border-bottom:1px solid var(--bd);font:400 .74rem var(--mono);color:var(--smut)}
.pl .ret{width:18px;height:18px;color:var(--lum)}
.pl .ret .core{stroke:var(--night)}
.pl span{overflow-wrap:anywhere;min-width:0}
.pl span:first-of-type{color:var(--lum);margin-right:auto}
.form{padding:1.2rem 1.3rem 1.4rem}
.tabs2{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--bd);border-radius:3px;padding:3px;gap:3px}
.tabs2 button{min-height:44px;background:transparent;border:0;border-radius:2px;color:var(--smut);font:600 .98rem var(--sans);cursor:pointer}
.tabs2 button:hover{color:var(--star)}
.tabs2 button[aria-selected=true]{background:var(--star);color:var(--night)}
.form :focus-visible{outline:2px solid var(--lum);outline-offset:2px}
.msg{margin-top:1rem;font-size:.95rem}
.msg:empty{display:none}
.msg.err{padding:.7rem .9rem;border:1px solid #ff9d8c;border-left-width:4px;border-radius:3px;background:rgba(255,120,100,.12);color:#ffd0c7}
.row{margin-top:1.05rem}
.row label{display:block;font:400 .78rem var(--mono);letter-spacing:.03em;color:var(--smut);margin-bottom:.4rem}
.row input{width:100%;min-height:52px;padding:0 .95rem;background:var(--night2);border:1px solid var(--bd);border-radius:3px;color:var(--star);font:400 1.05rem var(--mono)}
.row input:hover{border-color:var(--smut)}
.row input:focus{outline:2px solid var(--lum);outline-offset:2px;border-color:var(--lum)}
.note{font-size:.87rem;line-height:1.45;color:var(--smut);margin-top:.5rem}
.form .btn{border-color:var(--fill)}
.form .btn[data-submit]{width:100%;min-height:54px;margin-top:1.2rem;font-size:1.08rem}
.form .btn:hover{box-shadow:3px 3px 0 0 var(--star)}
.form .btn.ghost{color:var(--star);border-color:var(--bd)}
.keyout{display:none}
.keyout.on{display:block}
.keyout h3{font:italic 400 1.4rem/1.2 var(--ser);color:var(--star)}
.keybox{display:flex;align-items:center;gap:.7rem;margin-top:.9rem;padding:.6rem .6rem .6rem .9rem;background:var(--night2);border:1px dashed var(--lum);border-radius:3px}
.keybox span{flex:1;min-width:0;font:400 .9rem/1.4 var(--mono);color:var(--lum);overflow-wrap:anywhere;word-break:break-all}
.keyout>p:not(.note){margin-top:1rem;font-size:.95rem;line-height:1.9}
.keyout strong{font-weight:400;color:var(--smut)}
.keyout code{color:var(--star);overflow-wrap:anywhere}
.mut{color:var(--smut)}
.acts{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1.1rem}

/* closing band */
.cta{position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1.5rem 3rem;align-items:center;padding:clamp(26px,4vw,48px) clamp(22px,4vw,52px);border:1px solid var(--ink);border-radius:4px;margin-bottom:clamp(44px,6vw,80px)}
.cta .orb{position:absolute;right:26%;bottom:0;width:340px;margin:0;color:var(--star);opacity:.4;pointer-events:none}
.cta .orb .gs{stroke:var(--night)}
.ct,.ca{position:relative;min-width:0}
.cta h2{color:var(--star)}
.cta p{color:var(--smut);margin-top:.6rem;max-width:52ch}
.ca{display:flex;flex-wrap:wrap;gap:.7rem}

/* 404 */
.nf{padding-top:clamp(30px,6vw,70px);padding-bottom:clamp(50px,8vw,100px);max-width:760px;text-align:left}
.nf .orb{width:min(300px,70%);margin:0 0 .5rem}
.code4{font:400 .84rem var(--mono);color:var(--mut);margin-bottom:.8rem}
.nfl{display:flex;flex-wrap:wrap;gap:.2rem 1.4rem;margin:1.5rem 0}
.nfl a{display:inline-flex;align-items:center;min-height:44px}

/* footer */
.foot{border-top:1px solid var(--ink);box-shadow:0 -4px 0 -3px var(--hair);padding:clamp(30px,4vw,52px) 0 1.6rem;background:rgba(248,250,243,.72)}
.fg{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:2rem clamp(34px,5.5vw,84px)}
.fb p{color:var(--mut);margin:.3rem 0 1.1rem}
.fl{columns:2;column-gap:2rem}
.fl li{break-inside:avoid;border-bottom:1px dotted var(--line)}
.fl a{display:flex;align-items:center;min-height:44px;color:var(--ink);text-decoration:none;font-size:.96rem}
.fl a:hover{color:var(--g);text-decoration:underline}
.legal{display:flex;align-items:center;gap:1rem;margin-top:2rem;font-size:.86rem;color:var(--mut)}
.legal p{flex:1;min-width:0}

@media(max-width:1020px){
.grid{grid-template-columns:minmax(0,1fr)}
.rail{position:static;order:-1}
.rbox{max-height:none}
.rail-toc .rc,.rail-cta{display:none}
.fx{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1.4rem}
.hg{grid-template-columns:minmax(0,1fr);align-items:start}
.kh{grid-template-columns:minmax(0,1fr);grid-template-areas:"kt" "kf" "kb"}
.kf{max-width:560px}
.phi{grid-template-columns:minmax(0,1fr)}
.ph .orb{display:none}
.facts{grid-template-columns:repeat(3,minmax(0,1fr))}
.facts div:nth-child(4){border-left:0}
.facts div:nth-child(n+4){border-top:1px dotted var(--line)}
.facts div:first-child{border-radius:3px 0 0 0}
.cta{grid-template-columns:minmax(0,1fr)}
.cta .orb{right:-60px}
}
@media(max-width:820px){
.burger{display:inline-flex}
.bar{gap:.6rem;min-height:60px}
.btn.key{margin-left:auto}
.nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;margin:0;padding:.4rem clamp(18px,4vw,44px) .8rem;background:var(--paper);border-bottom:1px solid var(--ink)}
.nav.open{display:flex}
.nav a{min-height:50px;font-size:.95rem;border-bottom:1px dotted var(--line)}
.nav a:last-child{border-bottom:0}
}
@media(max-width:640px){
body{font-size:16.5px}
.fts,.ucs,.steps{grid-template-columns:minmax(0,1fr)}
.steps li{padding:0 0 1rem 3.1rem;min-height:3.4rem}
.steps li::before{font-size:2.5rem}
.steps li::after{display:none}
.ex{grid-template-columns:minmax(0,1fr)}
.facts{grid-template-columns:repeat(2,minmax(0,1fr))}
.facts div{border-left:0;border-top:1px dotted var(--line)}
.facts div:nth-child(even){border-left:1px dotted var(--line)}
.facts div:first-child{grid-column:1/-1;border-top:0;border-radius:3px 3px 0 0}
.facts div:nth-child(2){border-left:0}.facts div:nth-child(3){border-left:1px dotted var(--line)}
.facts div:nth-child(4){border-left:0}.facts div:nth-child(5){border-left:1px dotted var(--line)}
.fg{grid-template-columns:minmax(0,1fr)}
.fl{columns:1}
.mag{width:46px}.fx{display:block}
.art .lbl{display:none}
.art{margin-top:-.6rem}
.plate::before,.plate::after,.kf::before,.kf::after{display:none}
.logo{font-size:1.06rem;gap:.4rem}
.logo .ret{width:22px;height:22px}
.btn.key{padding:.4rem .7rem;font-size:.9rem;gap:.4rem}
.btn.key .ret{display:none}
.form{padding:1rem 1rem 1.2rem}
.pl{padding:.7rem 1rem}
.q p{padding-right:0}
.kf{box-shadow:4px 4px 0 -1px var(--paper),4px 4px 0 0 var(--ink)}
.rbox,.tk{box-shadow:4px 4px 0 -1px var(--paper),4px 4px 0 0 var(--ink)}
.legal .mag{display:none}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}